// System call numbers
#define SYS_fork    1
#define SYS_exit    2
#define SYS_wait    3
#define SYS_pipe    4
#define SYS_write   5
#define SYS_read    6
#define SYS_close   7
#define SYS_kill    8
#define SYS_exec    9
#define SYS_open   10
#define SYS_mknod  11
#define SYS_unlink 12
#define SYS_fstat  13
#define SYS_link   14
#define SYS_mkdir  15
#define SYS_chdir  16
#define SYS_dup    17
#define SYS_getpid 18
#define SYS_sbrk   19
#define SYS_sleep  20
#define SYS_upmsec 21
#define SYS_socket 22
#define SYS_bind   23
#define SYS_listen 24
#define SYS_accept 25
#define SYS_recv   26
#define SYS_recvfrom 27
#define SYS_send    28
#define SYS_sendto  29
#define SYS_shutdown 30
#define SYS_getsockopt 31
#define SYS_setsockopt 32
#define SYS_sockclose 33
#define SYS_connect 34
#define SYS_getpeername 35
#define SYS_getsockname 36

